求翻译：（一）本族语成分　　对词汇来源的研究，显然必须从本族语开始。　　在属于印欧语系的各种语言中，存在着一些共同的成分。事实上，语言学家正是基于这些共同成分，才把这些语言归纳在同一语系之中的。这些共同成分并不是以相同的形式存在于现代语言中，而是依照一定的音变规律，以符合各种语言的特征的形式存在。是什么意思？

(A) the source of native components of vocabulary study, that they must start from the native language. Belonging to the Indo-European languages, there are some common elements. In fact, linguists is based on these common elements, and only then summed up in these languages ​​among the same language

(a) of the source language glossary of ingredients, it is obviously necessary to study the language from the start. In the Indo-European Languages, the existence of a number of common elements. In fact, linguists It is on the basis of these common ingredients and it was only then that these language

(1) native language ingredient the research which originates to the glossary, obviously must start from the native language.　　In belongs to in Indo-European languages each language, has some common ingredients.In fact, the linguist is precisely based on these common ingredients, only then these lang

(A) native language components on study of lexical sources, it is clear that must start with a native. In the various languages belong to the Indo-, there are some common elements. In fact, linguists are based on these common components, summarized in these languages in the same language family. The

(A) native language components on study of lexical sources, it is clear that must start with a native. In the various languages belong to the Indo-, there are some common elements. Indeed linguist is for these common components, languages subsumed in these same languages only. These common component